Our Team
Capital Partners’ success is due in large part to the integrity and quality of our team. We have over 85 years of combined private equity experience and have backgrounds in both industry and private equity.
Brian D. Fitzgerald, Founder & Managing Director
Mark D. Allsteadt, Managing Director
Robert S. Tucker, Managing Director
John C. Willert, Principal
James Sidwa, Chief Financial Officer
Wendy E. Diglio, Assistant Controller/Investor Relations
Susan Russo, Executive Assistant/Office Manager
Founder & Managing Director
Mr. Fitzgerald founded Capital Partners® in 1982, along with the participation of management and principals from companies he previously acquired. Prior to founding Capital Partners®, he was a General Partner of Industrial Capital Group, a diversified acquisition and investment holding company. Before his tenure at Industrial Capital Group, he held senior positions at General Electric Co. and The Vencap Group, a corporate development and acquisition firm. Mr. Fitzgerald began his career at Kidder, Peabody as an Investment Banking Associate.
Mr. Fitzgerald received an M.B.A. from the Harvard Graduate School of Business Administration and a B.A. in History from Princeton University.
Mark D. Allsteadt
Managing Director
Mr. Allsteadt has been with Capital Partners since 2004. Prior to joining Capital Partners, he was a Partner with Saugatuck Capital Company in Stamford, CT. Preceding his involvement at Saugatuck, he was Senior Vice President of Operations with Eye Care Centers of America, Inc. and an operations executive in various positions at Circuit City Stores, Inc. Mr. Allsteadt started his career as an Analyst with RFE Investment Partners, a private equity firm in New Canaan, CT. He has served on the Board of Directors of a number of privately held companies.
Mr. Allsteadt received an M.B.A. from Stanford Graduate School of Business and a B.A. from Bucknell University.
Robert S. Tucker
Managing Director
Mr. Tucker joined Capital Partners in 2004. Prior to joining Capital Partners, he was a Partner with Saugatuck Capital Company in Stamford, CT, and a Partner with Rutledge Capital in Greenwich, CT. Mr. Tucker began his career as an Associate with Brown Brothers Harriman & Co. in New York where he was a member of the team that invested The 1818 Fund, L.P. and later was a member of the U.S. private equity investment group of Barclays Bank, a limited partner in The 1818 Fund. He has served on the Board of Directors of a number of private companies.
Mr. Tucker holds a B.A. in Physics and Economics from Middlebury College and an M.B.A. in Finance and Management from Columbia University Graduate School of Business.
John C. Willert
Principal
Mr. Willert joined Capital Partners in 2007. Prior to joining Capital Partners, he was a Principal with Family Capital Growth Partners in Greenwich, CT, where he sourced, executed and monitored investment opportunities and was concurrently a Vice President of de Visscher & Co., Family Capital’s affiliated investment bank, where he advised leading U.S. and international family businesses regarding numerous mergers, acquisitions, and recapitalizations.
Mr. Willert holds a B.A. from Gettysburg College and M.B.A in Finance and Accounting from Ohio State University.
James Sidwa
Chief Financial Officer
Mr. Sidwa joined Capital Partners in 2009. Prior to joining Capital Partners, he was with PricewaterhouseCoopers’ Transaction Services group in New York where he provided accounting and financial due diligence services to private equity firms and corporations who were acquiring or divesting businesses. Prior to joining PricewaterhouseCoopers, Mr. Sidwa was the Controller & Treasurer of FE Clean Energy, a specialty-focused private equity firm in Darien, Connecticut. James began his career with Price Waterhouse as a tax specialist and later with Arthur Anderson as an auditor of public and private companies.
Mr. Sidwa holds a B.S. from the University of Connecticut and is a Certified Public Accountant in Connecticut and New York.
Wendy E. Diglio
Assistant Controller/Investor Relations
Mrs. Diglio joined Capital Partners in 1994. She is currently responsible for the accounting of our limited partnerships, communications with our limited partners and assists in the due diligence and acquisition processes.
Mrs. Diglio graduated from Quinnipiac University with a B.S. in Accounting.
Susan Russo
Executive Assistant/Office Manager
Ms. Russo joined Capital Partners in October. She previously held an Executive Assistant position with Casey Quirk and Kruger Paper Sales. Ms. Russo graduated from Berkeley Business School in 2006. She currently has over 22 years experience in the administrative field.

